Audiovisual Dictionary Get to know the terms of the audiovisual ecosystem TODAS0-9ABCDEFGHIJKLMNOPQRSTUVWXYZ 4:3 Aspect ratio, 4 width by 3 height.Standard for television broadcasting. Our Services Teleport DesignRadio Production SystemsSportsTV Production Centres BACK TO INDEX 16:914:9Aspect Aspect 4:3 ← 4:1:1 4:2:2:4 →